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Glama

mngt_bfp

Toggle brute-force protection on DrayTek Vigor router to block repeated login attempts. Use on/off parameter to enable or disable protection with confirmation.

Instructions

Enable/disable brute-force protection (write — requires confirmation)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
onoffYes
user_codeNo
acknowledgeNo
confirm_tokenNo
confirmation_idNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.6.0

TDQS

C2.9/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations at all, the description carries the full burden for behavioral disclosure. It does say the operation is a write and that it requires confirmation, which is useful, but it does not explain side effects of enabling/disabling brute-force protection, the confirmation mechanism, or whether settings changes are immediate or reversible. For a sensitive write tool, this is insufficient.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single compact sentence with the verb and resource front-loaded, followed by a useful behavioral parenthetical. Every word earns its place, with no fluff or repetition.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Despite the simple surface action, this tool has five parameters, zero schema descriptions, no annotations, and no output schema. The description does not explain the confirmation flow, the role of any parameter, or the expected result of the write. An agent would not be able to invoke it correctly without external knowledge, so the description is not complete enough.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description adds essentially no meaning to the five parameters. It implies on/off through 'Enable/disable', but the schema already enumerates that. The confirmation-related fields (user_code, acknowledge, confirm_token, confirmation_id) are not connected to the stated confirmation requirement, so an agent cannot determine how to populate them.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states a specific action ('Enable/disable') applied to a specific resource ('brute-force protection'). This fully distinguishes it from the many status/read-only sibling tools, and there is no other brute-force protection tool in the sibling list. It is not a tautology and the write/confirmation note adds useful precision.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives no guidance about when to use this tool versus alternatives, nor any exclusions or prerequisites. The parenthetical '(write — requires confirmation)' hints at a workflow requirement, but it never explains how to obtain a confirmation token, when confirmation is needed, or what the expected sequence of calls is. An agent is left to infer usage entirely.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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